This is the most versatile method, working on both Windows and macOS.
Jailbreaking is generally safe, but skipping preparatory steps can lead to data loss.
A: No. The jailbreak is semi-untethered . This means if you turn your phone off and back on, the jailbreak will be disabled. You will need to open the Chimera app and re-jailbreak. However, your installed tweaks and data will remain safe.
Update your package manager sources to access modern tweaks compatible with legacy iOS architectures. Safety and Avoiding Scams
Checkra1n is widely considered the best jailbreak for iOS 12.5.7. It is based on the "checkm8" exploit, which is a bootrom vulnerability.
Temporarily disable your passcode and Touch ID in Settings to prevent the exploit from failing during initialization.
Chimera is the go-to choice for iOS 12. It supports all devices on 12.5.7 and installs , which is faster and more modern than the classic Cydia. Pros: Easy to use, supports all A7-A11 devices. Download: chimera.sh 2. Checkra1n (Most Reliable)